K_2CO_3-哌嗪复合溶液脱除CO_2驱采出气中CO_2的实验研究  

Experimental Study on Recovery of Carbon Dioxide from CO_2-EOR Associated Gas by K_2CO_3-PZ Mixed Amine Solutions

作　　者：张新军[1,2] 李庆领[1] 陆诗建[2] 高嵩[3] 李清方[2] 张建[2] 

机构地区：[1]青岛科技大学机电工程学院,山东青岛266042 [2]胜利油田胜利勘察设计研究院有限公司,山东东营257026 [3]中国石油大学(华东)储运与建筑工程学院,山东东营257061

出　　处：《青岛科技大学学报（自然科学版）》2013年第3期274-278,284,共6页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：国家科技支撑计划项目"大规模燃煤电厂烟气CO2捕集;驱油及封存技术开发及应用示范"(2012BAC24B00)

摘　　要：CO2被注入油层后,约有40%～50%(体积分数)随着油田采出液伴生气溢出,采出液中含有大量CO2及水,针对脱除CO2驱采出气中CO2开展实验模拟研究,采用耐压实验装置模拟CO2驱采出伴生气特性,结合胜利油田CO2驱现场实际情况,在中压条件下对碳酸钾及其与哌嗪的复合溶液进行了实验研究,记录不同浓度溶液在不同温度、压力、时间下的进出气量,揭示了吸收速率、吸收容量与时间、溶液浓度的内在关系;对吸收饱和的富液进行了再生实验,详细记录CO2初始析出温度,富液再生温度,富液再生能耗及富液再生率,并进行对比分析。通过实验结果综合分析,筛选出质量分数为30%碳酸钾+3%哌嗪溶液是较优的二元复合溶液,在油田CO2驱采出气CO2捕集领域具有较佳的科研价值和工业应用前景。Carbon dioxide emission and the use of technology has become the global hot-point,CO2-enhanced oil recovery technology is widely used at home and abroad.About 40%—50%carbon dioxide overflows with associated gas when it is injected underground.Produced fluid contains a large amount of CO2 and water,resulting in the pipeline and equipment corrosion exacerbate,which bring many problems to the production of oil and gas gathering.Therefore,CO2-EOR associated gas carbon dioxide separation and recovery technology is important to study,in which absorption solvent study is most important.The experiment simulates the CO2-EOR associated gas properties with pressure device,studys K2CO3 and K2CO3-PZ solutions absorption experiments under medium pressure,records the amount of into and out gas at different concentrations of the solution and at different temperatures,pressure,time,which reveals the intrinsic relationship between the absorption rate,absorption capacity and time.Also conducting the rich liquid regeneration experiments at the end of absorption,recording the initial CO2 precipitation temperature,rich liquid regeneration temperature,rich liquid regeneration energy consumption and regeneration rate before and after regeneration.Focusing on studying the main characteristics of absorption and desorption,the ratio of the concentration of 30% K2CO3＋3%PZ solution is optimal binary complex solution,which has a better value for scientific research and industrial applications prospects in CO2-EOR associated gas field of carbon capture.

关 键 词：采出气 二氧化碳 碳酸钾(K2CO3) 哌嗪(PZ) 

分 类 号：TQ413.29[化学工程] TQ426.6